AI-Powered Image Captioning & Overlay Workflow
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Automate the generation of descriptive captions for your images using Google Gemini and overlay them directly onto the visuals. This workflow streamlines content creation and enhances image utility.
About This Workflow
Unlock the power of AI for your visual content with this n8n workflow. It intelligently fetches an image, leverages Google's Gemini multimodal vision model to generate a descriptive caption, and then elegantly overlays this caption onto the original image. Perfect for social media posts, product listings, or any scenario where context is key, this workflow automates a time-consuming process. It demonstrates how to seamlessly integrate advanced AI capabilities with image manipulation for enhanced visual storytelling and branding.
Key Features
- AI-Powered Caption Generation: Utilizes Google Gemini to understand image content and create relevant captions.
- Dynamic Caption Overlay: Automatically places generated captions onto images with calculated positioning and styling.
- Multimodal Vision Model Integration: Supports advanced vision models for nuanced image analysis.
- Customizable Image Resizing: Prepares images for AI processing by resizing to a specified dimension.
- Editable Workflow: Built with n8n's visual interface, allowing for easy customization and integration into existing automation stacks.
How To Use
- Import an Image: Configure the
HTTP Requestnode (or replace it with your preferred trigger) to fetch the image you want to process. - Process Image Information: Use the
Get Infonode to retrieve image dimensions. - Resize for AI: Employ the
Resize For AInode to adjust the image size to 512x512 pixels, optimizing it for the AI model. - Generate Caption with Gemini: Connect the
Google Gemini Chat Modelto process the image and generate a caption. Ensure your Google Gemini API credentials are set up. - Structure AI Output: Use the
Structured Output Parserto define the expected JSON format for the caption (e.g.,caption_title,caption_text). - Calculate Caption Positioning: The
Calculate Positioningcode node intelligently determines the optimal placement and styling for your caption based on image dimensions and text length. - Merge Image Data: The
Merge Image & Captionnode combines the original image data with the AI-generated caption information. - Apply Caption to Image: The
Apply Caption to Imagenode draws a semi-transparent background rectangle and overlays the generated caption text onto the image. - Finalize Output: The
Merge Caption & Positionsnode ensures all image and caption data is correctly combined before the final output.
Apps Used
Workflow JSON
{
"id": "b77b5b3a-4191-430f-bfbb-6b8ceba66fad",
"name": "AI-Powered Image Captioning & Overlay Workflow",
"nodes": 6,
"category": "Marketing",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
Get This Workflow
ID: b77b5b3a-4191...
About the Author
DevOps_Master_X
Infrastructure Expert
Specializing in CI/CD pipelines, Docker, and Kubernetes automations.
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